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Title:
THIN ELECTROMAGNETIC SHEET STEEL SUPERIOR IN PUNCHING DIMENSIONAL ACCURACY AND HIGH-FREQUENCY MAGNETIC PROPERTIES
Document Type and Number:
Japanese Patent JP2003197414
Kind Code:
A
Abstract:

To provide thin electromagnetic sheet steel that has proper press punching in various diameters, ranging from a small diameter to a large diameter and is superior in the high-frequency magnetic property, in which deterioration of punching dimensional accuracy, which has been of concern in the case of performing press punching to a large core, is advantageously overcome.

The relation of the following equation is satisfied, with regard to a sheet thickness of 0.30 mm or less, and a yield point YP (N/mm2) and a sheet thickness (mm): YP × sheet thickness ≥65.


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Inventors:
KONO MASAAKI
KONO MASAKI
MINATO TAKEHIKO
SATO KEIJI
FUJIYAMA TOSHIRO
Application Number:
JP2001397367A
Publication Date:
July 11, 2003
Filing Date:
December 27, 2001
Export Citation:
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Assignee:
JFE STEEL KK
International Classes:
C22C38/00; C22C38/06; C22C38/18; H01F1/16; (IPC1-7): H01F1/16; C22C38/00; C22C38/06; C22C38/18
Domestic Patent References:
JPS64226A1989-01-05
JPS5273120A1977-06-18
JPH1025552A1998-01-27
JPH1024333A1998-01-27
JP2001247943A2001-09-14
JP2000129409A2000-05-09
Attorney, Agent or Firm:
Sugimura Kosaku (1 person outside)



 
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